<form method="post" action="">
    <table>
        <tr>
            <td>用户名：</td>
            <td><input type="text" name="name"></td>
        </tr>
        <tr>
            <td>密码：</td>
            <td><input type="text" name="pass"></td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" name="下一步">
                <input type="hidden" name="step" value="step1">
            </td>
        </tr>
    </table>
</form>